Verify run-time size relocations if supported

* ld-size/size-7.out: New file.
	* ld-size/size-8.out: Likewise.
	* ld-size/size-9.out: Likewise.
	* ld-size/size-9.rd: Likewise.
	* ld-size/size-9a.c: Likewise.
	* ld-size/size-9b.c: Likewise.
	* ld-size/size-10.out: Likewise.
	* ld-size/size-10.rd: Likewise.
	* ld-size/size-10a.c: Likewise.
	* ld-size/size-10b.c: Likewise.

	* ld-size/size.exp (build_tests): Build libsize-9.so and
	libsize-10.so.
	Run-time size relocation tests if supported.
	(run_time_tests): New.

ld/testsuite/ChangeLog

@@ -1,3 +1,21 @@
+2013-01-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ld-size/size-7.out: New file.
+	* ld-size/size-8.out: Likewise.
+	* ld-size/size-9.out: Likewise.
+	* ld-size/size-9.rd: Likewise.
+	* ld-size/size-9a.c: Likewise.
+	* ld-size/size-9b.c: Likewise.
+	* ld-size/size-10.out: Likewise.
+	* ld-size/size-10.rd: Likewise.
+	* ld-size/size-10a.c: Likewise.
+	* ld-size/size-10b.c: Likewise.
+
+	* ld-size/size.exp (build_tests): Build libsize-9.so and
+	libsize-10.so.
+	Run-time size relocation tests if supported.
+	(run_time_tests): New.
+
 2013-01-17  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* ld-size/size-1.c: New file.

ld/testsuite/ld-size/size-10.out

@@ -0,0 +1 @@
+OK

ld/testsuite/ld-size/size-10.rd

@@ -0,0 +1,3 @@
+#...
+[0-9a-f]+ +[0-9a-f]+ +R_.*_SIZE(32|64) +.*
+#pass

ld/testsuite/ld-size/size-10a.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+extern int bar_size;
+extern char *get_bar (int, int);
+
+int
+main ()
+{
+  char *bar = get_bar (2, 20);
+  if (bar_size == 10 && bar[2] == 20)
+    printf ("OK\n");
+
+  return 0;
+}

ld/testsuite/ld-size/size-10b.c

@@ -0,0 +1,10 @@
+__thread char bar[10];
+extern char size_of_bar asm ("bar@SIZE");
+char *bar_size = &size_of_bar;
+
+char *
+get_bar (int i, int v)
+{
+  bar[i] = v;
+  return bar;
+}

ld/testsuite/ld-size/size-7.out

@@ -0,0 +1 @@
+OK

ld/testsuite/ld-size/size-8.out

@@ -0,0 +1 @@
+OK

ld/testsuite/ld-size/size-9.out

@@ -0,0 +1 @@
+OK

ld/testsuite/ld-size/size-9.rd

@@ -0,0 +1,3 @@
+#...
+[0-9a-f]+ +[0-9a-f]+ +R_.*_SIZE(32|64) +.*
+#pass

ld/testsuite/ld-size/size-9a.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+char bar[20];
+extern int bar_size;
+
+int
+main ()
+{
+  if (bar_size == 20)
+    printf ("OK\n");
+
+  return 0;
+}

ld/testsuite/ld-size/size-9b.c

@@ -0,0 +1,3 @@
+char bar[10];
+extern char size_of_bar asm ("bar@SIZE");
+char *bar_size = &size_of_bar;

ld/testsuite/ld-size/size.exp

@@ -85,6 +85,12 @@ set build_tests {
   {"Build size-8"
    "tmpdir/libsize-8.so" ""
    {size-8a.c} {{readelf -rW size-8.rd}} "size-8.exe"}
+  {"Build libsize-9.so"
+   "-shared" "-fPIC"
+   {size-9b.c} {{readelf -rW size-9.rd}} "libsize-9.so"}
+  {"Build libsize-10.so"
+   "-shared" "-fPIC"
+   {size-10b.c} {{readelf -rW size-10.rd}} "libsize-10.so"}
 }
 
 run_cc_link_tests $build_tests
@@ -132,3 +138,32 @@ set run_tests {
 }
 
 run_ld_link_exec_tests [] $run_tests
+
+# Check if size relocation works at run-time.
+catch "exec tmpdir/size-7.exe > tmpdir/dump.out" exec_output
+if ![string match "" $exec_output] then {
+    send_log "No run-time size relocation support: $exec_output\n"
+    verbose "No run-time size relocation support: $exec_output" 1
+    return
+}
+
+if { [regexp_diff "tmpdir/dump.out" "$srcdir/$subdir/size-7.out" ] } then {
+    verbose "output is [file_contents "tmpdir/dump.out"]" 2
+    fail "Run-time size relocation"
+    return
+}
+
+# Run-time size relocation tests.
+set run_time_tests {
+    {"Run size-8"
+     "tmpdir/libsize-8.so" ""
+     {size-8a.c} "size-8" "size-8.out"}
+    {"Run size-9"
+     "tmpdir/libsize-9.so" ""
+     {size-9a.c} "size-9" "size-9.out"}
+    {"Run size-10"
+     "tmpdir/libsize-10.so" ""
+     {size-10a.c} "size-10" "size-10.out"}
+}
+
+run_ld_link_exec_tests [] $run_time_tests